If you think you can do it, you can.
Well done is better than well said.
Things do not happen. Things are made to happen.
Expect problems and eat them for breakfast.
If you've got a talent, protect it.
Either you run the day or the day runs you.
You never know what motivates you.
To know oneself, one should assert oneself.
Leap, and the net will appear.
If you're going through hell, keep going.
I have taught history on the high school and college levels, and am or have been a lecturer at the Smithsonian, The National Institutes of Health, and numerous colleges and universities, mostly on science fiction and technology subjects.